Lifting apparatus



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A J. SARGENT.

LIPTING APPARATUS.

No. 357,234. Patented Feb. 8, 1887.

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J. SARGENT. LIFTING APPARATUS.

No. 357,234. P tented Feb. 8 1887.

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LIFTING APPARATUS. No. 357,234. Patented Feb. 8, 1887..

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JAMES SARGENT, OF ROCHESTER, NEW YORK.

LIFTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 357,234, dated February 8, 1887.

Application filed April 19, 1886. Serial No. 199,304. (No model.)

T0 at whom, it may concern:

Be it known that 1, JAMES SARGENT, of the city of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Lifting Apparatus; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the drawings accompanying this application.

My improvement relates to apparatus for lifting weights and transferring'them from one place to another. It is applicable to many different purposes, but specially to handling cylindrical sections of tanks that are to be enameled for holding-beer and similar liquids. In such case the section is inserted in a furnace for the purpose of heating, and is then removed and deposited on a side platform. To do this the apparatus for handling the tank-sections has to be raised and lowered, being kept level throughout the operation in order to insert it under the section and raise it from its support and then lower it again on the next support.

The invention consists in the following con struction and arrangement.-

In the drawings, Figure l is a plan view of the apparatus, the same resting on a turn-table. Fig. 2 is alongitudinal vertical section of the same in line x at of Fig. 1. Fig. 3 isan enlarged cross-section of same in line y y of Fig. 1. Figs. 4, 5, and 6 are detail views. Fig. 7 is a diagram showing a section of the furnace and a plan of the carriage and lifting apparatus and'three stationary platforms, to any of which the weight may be transferred from the apparatus.

In the drawings, A shows a turn-table,which is located over a pit, B, in the usual way, and G G are railway-tracks leading from the turntable to the furnace D, and on which the carriage or truck runs.- 7

E is the carriage or truek,which is'supported by four wheels, F F F F, resting on the rails, and may be of any desired form and construc- It has .two cranked axles, G G, which proper movement of the lifting-frame. The lifting-frame consists of two longitudinal bars, H H, extending from front torear, connected together by cross-ties a a, and resting loosely on the cranked axles G G, and capable of vertical movement bodily by the means hereinafter described.

' To the front end of the bars is rigidly attached a pronged platform, I,which I denominate the fork, the prongs being long enough to run under the weight to be lifted and support the same'while being transferred; On the rear end of the bars is placed a weight, J, which is heavy enough to counterbalance the lifting-frame, the fork, and its load.

K K are two side levers, connected at the rear by a cross-bar, K, the front ends of said levers resting in slotted standards L L, rising from the front cranked axle, G, and having their fulcrums on sharp edges 12 b of said standards, as shown in Fig. 5. The front ends of said levers are connected with a tie-piece, M, that is rigidly attached to and connects the bars H H, said connection being made by links 0 c, Figs. 5 and 6, or by any other suitable means. It will be seen that as the levers K K are depressed in the rear the front ends, and with them the lifting-frame H H and fork I, will be I raised vertically.

N is a counterweight on the rear ends of the levers K, which is heavy enough to nearly counterbalance the weight of the lifting-frame, the fork, and the counter-weight J.

0 O O O are pulleys, two on each side of the machine, their journals resting in bearings d d of the sides of the carriage or truck E.

f f are cables which pass overthe tops of said pulleys. The front ends of the cables are attached to the side levers, K K, back of the fulcrum, the fulcrum being equidistant between said point of attachment and the links '0 in front, and the rear ends areattached to the rear tie-piece, M. The arrangement is such that when thelevers K Kare forced down to raise the fiont end of the lifting-frame the cables will draw up the rear end of the liftingframe and keep it level. The lifting-frame will always be raised and lowered in a level position by this means. The full and dotted lines in Fig. 2 show different heights of the lifting-frame in level positions.

P is a Windlass at the rear of the machine, supported by standards 9 g, rising from the rear cranked axle, G, and driven by a crank, h, and gear-wheels z k, or any other suitable means.

lis a cord or cable attached atone end to -other to the Windlass, on which it winds.

the crossbar K of the side levers and at the y this means the platform with the load thereon can be easily raised.

The diagram Fig. 7 illustrates my invention used for inserting and removing a tanksection, B, into and from the enameling-furnace D.

T T T are stationary forked platforms at the sides and rear of the apparatus. To insert the tank-section in the furnace, it is first mounted on the fork of the apparatus by a crane'or other means. The fork is raised before being run into the furnace, so as to carry the bottom of the tanksection above the slotted support or platform V on the floor of the furnace. The prongs of the fork run above the slots, carrying the section over the support. The fork is then lowered into the slots, landing the section on the support, and in this condition the fork can be withdrawn and the doors closed.

To remove the section, the fork, in the lowered position, is run under the section again, then raised, and the carriage is run back on the turntable, then turned to one side, so as to bring the fork over one of the side platforms, T, and then lowered, which deposits the load 011 the platform. The platform being forked and open on the under side, the fork of the machine can be swung from under it, leaving the machine free. 7

Q is alatch-shaped locking-catch on the rear of the turntable, which, when the machine is run fully back, catches the rear axle and prevents the carriage from running forward till the catch is thrown out of engagement by the foot.

7 is a locking-lever on the turn-table, to prevent the machine from swinging out of line with the main track. It is pivoted centrally at m to the turn-table, and has a downwardlyturned point, 12, that strikes into a socket-,1), Fig. 4, in the track outside of the table. The lever is forced down by a spring, 1', that rests under the lever in rear of the pivot.

On the rear end of the lever is a stud, s, that projects inward across the path of the rear wheel in running back. Vhen the machine is fully run back on the table, the wheel, striking the stud s, tilts the lever and releases it from its holding-socket, so that the table can turn. At all other times the lever holds in the socket and centers the table with the stationary track, so that it can run forward and back.

This invention is of particular value in situations where large weights cannot be conveniently lifted and moved by hand nor by a crane. By its use a load can be inserted into or removed from an intensely-heated furnace without much waste of heat or loss of time.

I do not wish to confine myself to lifting the load in an exactly horizontal position, as, if desired, the lifting-frame can be set more or less at an angle or incline; but it is essential that the lifting-frame be raised and lowered equally at both ends.

Having described myinvention,what I claim as new,and desire to secure by Letters Patent, 1s-

1. In a machine for lifting and transferring weights, the combination, with the supporting carriage or truck, of a lifting-frame resting loosely in the carriage and mechanism for raising and lowering the lifting-frame equally at both ends, as set forth.

2. In a machine for lifting and transferring weights, the combination of a supporting earriage or truck, a lifting-frame resting loosely therein and capable of vertical movement at both ends, levers working on fulcrums and connected with the front end of the liftingframe, and connections extending from the levers to the rear of the lifting-frame,whereby said lifting-frame is raised and lowered equally at both ends, as set forth.

3. In a machine for lifting and transferring weights, the combination of the supporting carriage or truck, the lifting-frame resting loosely therein, the levers fulcrumed to raise the front end of the lifting-frame, pulleys mounted at the sides of the carriage, and cables passing over the pulleys attached at one end to the lovers and at the other end to the rear of the lifting-frame, whereby said lifting-frame is raised and lowered equally at both ends, as set forth.

4.. In a machine for lifting and transferring weights, the combination of the supporting carriage or truck, the lifting-frame resting loosely therein, the fork attached to the front of the lifting-frame, the levers at the sides fulcrumed to raise the front end of the lifting-frame, the pulleys at the sides of the carriage, and the cords passing over the pulleys, attached at one end to the levers and at the other to the rear of the lifting-frame, as set forth.

5. The combination, with the carriage, of a lever pivoted to the turn-table, havingapoint at one end that strikes into a socket and a stud at the other end that rests in position to be struck by one of the wheels when run back, and a spring under the lever for engaging the point with the socket, as set forth.

6. In an apparatus for lifting and transferring weights, the combination, with the carriage E'and turn-table A, of the spring-catch Q, pivoted to the turn-table, and provided with a hook that catches the frame of the carriage when run fully back on the turn-table, as set forth.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JAMES SARGENT.

Witnesses:

R. F. OSGOOD, PoMERoY P. DICKINSON.

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